OC3-xml文件解析

<?xml version="1.0"?>

<xml_api_reply version="1">

    <cities>

        <city>

            <name data="保定"/>

            <latitude_e6> 38849998</latitude_e6>

            <longitude_e6> 115569999</longitude_e6>

        </city>

        <city default="true" >

            <name data="北京"/>

            <latitude_e6> 39930000</latitude_e6>

            <longitude_e6> 116279998</longitude_e6>

        </city>

        <city>

            <name data="沈阳"/>

            <latitude_e6> 41770000</latitude_e6>

            <longitude_e6> 123430000</longitude_e6>

        </city>

        <city>

            <name data="成都"/>

            <latitude_e6> 30670000</latitude_e6>

            <longitude_e6> 104019996</longitude_e6>

        </city>

        <city>

            <name data="大连"/>

            <latitude_e6> 38900001</latitude_e6>

            <longitude_e6> 121629997</longitude_e6>

        </city>

        <city>

            <name data="福州"/>

            <latitude_e6> 26079999</latitude_e6>

            <longitude_e6> 119279998</longitude_e6>

        </city>

        <city>

            <name data="阜阳"/>

            <latitude_e6> 32930000</latitude_e6>

            <longitude_e6> 115830001</longitude_e6>

        </city>

        <city>

            <name data="赣州"/>

            <latitude_e6> 25850000</latitude_e6>

            <longitude_e6> 114949997</longitude_e6>

        </city>

        <city>

            <name data="广州"/>

            <latitude_e6> 23129999</latitude_e6>

            <longitude_e6> 113319999</longitude_e6>

        </city>

        <city>

            <name data="贵阳"/>

            <latitude_e6> 26579999</latitude_e6>

            <longitude_e6> 106720001</longitude_e6>

        </city>

        <city>

            <name data="哈尔滨"/>

            <latitude_e6> 45750000</latitude_e6>

            <longitude_e6> 126769996</longitude_e6>

        </city>

        <city>

            <name data="海口"/>

            <latitude_e6> 20030000</latitude_e6>

            <longitude_e6> 110349998</longitude_e6>

        </city>

        <city>

            <name data="邯郸"/>

            <latitude_e6> 38029998</latitude_e6>

            <longitude_e6> 114419998</longitude_e6>

        </city>

        <city>

            <name data="杭州"/>

            <latitude_e6> 30229999</latitude_e6>

            <longitude_e6> 120169998</longitude_e6>

        </city>

        <city>

            <name data="合肥"/>

            <latitude_e6> 31870000</latitude_e6>

            <longitude_e6> 117230003</longitude_e6>

        </city>

        <city>

            <name data="菏泽"/>

            <latitude_e6> 36119998</latitude_e6>

            <longitude_e6> 114370002</longitude_e6>

        </city>

        <city>

            <name data="衡阳"/>

            <latitude_e6> 36119998</latitude_e6>

            <longitude_e6> 114370002</longitude_e6>

        </city>

    </cities>

</xml_api_reply>

//

//  main.m

//  OC3-xml文件解析

//

//  Created by qianfeng on 15/6/25.

//  Copyright (c) 2015年 qianfeng. All rights reserved.

//

#import <Foundation/Foundation.h>

#import "GDataXMLNode.h"

int main(int argc, const char * argv[]) {

    @autoreleasepool {

        NSData *xmlData =[NSData dataWithContentsOfFile:@"/Users/qianfeng/Desktop/text/text/untitled folder/内存管理/OC3-xml文件解析/citys.xml"];

        //创建docmentd对象

        GDataXMLDocument *xmlDocument =[[GDataXMLDocument alloc] initWithData:xmlData options: error:nil];

         GDataXMLElement *rootElement =[xmlDocument rootElement];

        //Xpath

        //相对路径:从当前节点计算的路径 用点表示当前节点 (当前路径为xml_api_reply下的节点)

        //绝对路径:从根节点计算的路径  /xml_api_reply/cities/city/name (绝对路径文件最前面要加'/')

        // NSArray *names = [rootElement nodesForXPath:@"/xml_api_reply/cities/city/name" error:nil];

        NSArray *names = [rootElement nodesForXPath:@"./cities/city/name" error:nil];

        for (GDataXMLElement *name in names) {

            NSString *nameString =[[name attributeForName:@"data"] stringValue];

            NSLog(@"name =%@",nameString);

        }

        NSArray *latitudes=[rootElement nodesForXPath:@"./cities/city" error:nil];

        for (GDataXMLElement *latitude in latitudes) {

            NSString *latitudeString =[[[latitude elementsForName:@"latitude_e6"] firstObject] stringValue];

            NSLog(@"latitude_e6 =%@",latitudeString);

        }

        NSLog(@"name =%@",names);

    }

    return ;

}